Belt-governing mechanism.



I E. A. OSGOOD.

BELT GOVERNING MECHANISM.

APPLICATION FILED MAY 19, 1908.

Patented May 11, 1909.

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ATTOHNEKF.

E. A. OSGOOD.

BELT GOVERNING MECHANISM.

APPLIOATIOH FILED MAY 19, 1908.

Patented May 11, 1909.

SSHEETS-SHEET 2.

- E. A. o'seoon. BELT GOVERNING MEGHANISM. LPPLIQATION FILED MAY 19 1908.

921,621. Patnted May 11, 1909.

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EUGENE A. OSGOOD, OF GARFIELD,

UTAH, ASSIGNOR. OF ONE-HALF TO JOSEPH A. KAUFFMAN, OF TOQELE, UTAH.

' BELT-GOVERNING MECHANISM Specification of. Letters Patent.

Application filed; Kay 19, 1908-. Serial. No. 433,718& 1

To all w'hom it may concern:

Be 1t known that I, EUGENE A. Oseoon,

residing at Garfield, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements lI1 Belt- Governing Mechanism, of which the following is a specification.

My invention relates to certain new and useful improvements in belt governing mechanism for use in continuous belt ore concentrators and the like and in its generic nature the invention embodies means for keeping the belt in proper position on the pulleys and prevent endwise creeping of the belt on the pulleys. 1

More specifically my invention comprises idler pulleys cotiperating with the belt, and a means controlled by the endwise creeping of the belt for bringing the idler pulleys into play to change the tension on one side or the other of the belt, and cause it to creep back to its normal position, and means for automatically returning the idler ,pulleys to their normal position after the belt has reassumed its normal position.

In its more subordinate nature the invention embodies those novel details of construction, combination and arrangement of parts, all of which will be first described and then specifically pointedout in the appended claims, reference being bad to the accompanying drawings, in which Figure 1, is a perspective view of an endless belt concentrator embodying my invention. Fig. 2, is a top plan view of the parts shown in Fig. 1. Fig. 3, is a central, vertical longitudinal section of the parts shown in Fig. 2'. Fig. 4, is a cross section on the line 4-4 of Fig. 3. Fi 5, is a diagrammatic view illustrating t e normal position of parts. Fig. 6, is a similar view illustrating the position of parts when the belt has crept to oneside in the direction of the-arrow and the pulley engaging arm has been released to come into engagement with the pulley. Fig. 7, is a similar view showing the position of parts after the idler pulley arm as engaged the pulley spoke and been drawn'to itslocked position. Fig. 8, is a detail view of the belt engaging pulley. Fig.

9 is a detail perspective view of a portion of my invention Referring now to the accompanying drawin s in which like letters and numerals of re crence indicate like parts in all" of thefigures, 1 designates the concentrator which consists of the frame 1 which supports the axles 2, 3' and 4, of the main pulleys 2, 3 and 4 respectively over which the belt 5 passes, the belt 5- alsopassing over an idler pulley 6 which is mounted on a shaft 6 supported in hangers 7 that are fulcrumed' at 7 on brackets 18 secured to the frame at will pass thereover, as shown in the drawings.

Patented May 11, 1909-.

each side of the machine so that the belt 5 the pulley 3*, at times. On its under face the arm 9' carries a stop 9 for a 'urpose which will be presently explained, am on the side 0 posite to the frame 1' the arm 9 carries a eat spring member 9- that is adapted to slide into the loop 8 and force the arm away from the pulley and release the hook 9 from the spoke at times, in a manner which will be hereinafter more fully explained.

10 designates arms which are-fulcrumed at 10" to the brackets 18, to swing horizontally,

the arms 10 carrying grooved wheels 1'0 at their ends to engagethe edges of the belt 5 on either side thereof, there being two arms 10 arranged" one on each side of themachinc, and these arms 10 are joined by a transverse rod 11 which is pivoted at 11 to the arms 10 and carries fixed stops ll on either side of which the movable collars 1'2 and 13 are -mounted.

14 designates a bell? crank lever fulcrumed at M on afixed' ortion 1 of the-frame, one arm 14 of whic is pivotally connected at 15 with arod 15 that is joined with the collar 12' so-that as the-collar r2moves laterally,

the arm- 14 of thebell crank lever will be moved in a vertical plane. Normally the arm 1'4" ofithebell crank lever 14 has its end abutting the arm 9 so as to hold its hook 9* away from alinement with the spokes 3 of the pulley 3, as shown in the diagrammatic '3" of the pulley 2*. of resilient material and normally tend to clear of the path of movement of the stop 9" of such arm 9 for a purpose which will be presently explained. It should be understood that there are duplicate levers 9, one on each side of the machine andthe corresponding parts attached thereto are also du plicated, one on each side of the frame.

So far as described, the manner in which my invention operates will be best explained as follows: Assume the parts to be in the position shown in Figs. 2 and 5, with the belt in central alinement, now su posing the belt starts, to creep toward the rig it of Fig. 2, this will carry with it the rollers 10 and hence the arms 10 will be moved with the same, thus carrying the rod 11 in the direction of the arrow in Fig. 2, causing the fixed sto 11 to engage the collar 12 at the left of F 1g. 2, and move the same in the same direction as the belt is cree ing,namely, toward the right in Fig. 2, t us causing the bell crank levcr to be moved on its pivot to bring its arm 14 out of alinement with the arm 9, as shown in Fig. 6, and permit the arm 9 to move with its end 9 into engagement with the spokes The arms 9 are formed move in engagement with the spokes. As soon as the hook 9 hooks into a spoke the arm 9 will be moved longitudinally and hence draw the-corresponding end of the pulley 6 upwardly, thus changing the tension on that side of the belt. As soon as the arm 9 has been moved longitudinally a sufiicient distance to cause the spring 9 to enter the loop or bracket 8, the same will release the hook 9' from the spoke. In the meantime the stop 9 will have passed over the arm 16 of the bell crank lever 16, and such lever will hold the arm 9 in such position. The arm 9 remains in the position stated until the belt has crept back to its normal posi tion when the stop 11 will engage the collar 13 and move it laterally to rock the bell crank lever 16 out of alinement with the stop 9 and permit the parts to return to their normal position, it being understood that the same operation takes place in the other side of the machine when the belt creeps in an opposite direction to the arrow in Fig. 2.

Suitable springs may be rovided wherever found necessary to hoFd the parts in their normal positions and it is to be understood that the distance between each set of collars 12 and 13 may be either greater or less than shown in the drawings, but by making the distance relatively slight the machine will operate to shift the belt into its normal position after it has crept only a slight distance out of alinement and by spacing the collars 12 and 13 farther apart-the be t may be allowed to creep farther as may be found desirable.

After the member 1 1 disengages the member 12 to move toward the member 13, the

lever 14 by its own weight, will turn to the Eosition shown in Fig. 9. This is also aided y the frictional contact between the member 12 and shaft 11, likewise the frictional contact between the member 13 and shaft 11 will return the lever 16 to the position shown in Fig. 9, when the member 11 moves toward the member 12, or suitable springs may be provided to aid the action of gravity and friction in any well known manner.

W'hat I claim is: i

1. The combination with the endless belt and the main ulleys over which it passes, one of said puiley's having spokes, an idler )ulley over which said belt passes, a support for said idler pulley, means connected WithQ said sup )ort and adapted to engage the spokes 0 said main pulley to change the relative position of the idler pulley at times.

2. The combination with the endless belt and the main pulleys over which it passes, one of said pulleys having spokes, an idler pulley over which said belt passes, a support for said idler pulley, means connected with said sup ort and adapted to engage the spokes of san main pulley to change the relative position of the idler ulley at times, and means for releasing said spoke engaging means at other times.

3. The combination with the belt and the main pulley over which it passes, said main pulley having spokes, of an idler pulley over which said belt passes, a support for said i'dler pulley, means connected with said support and normally tending to engage with the spokes of said main pulley for shifting the position of ihe idler pulley, means for normally holding said s oke engaging means out of enga ement wit the spoke and means controlled y the lateral movement of the belt for releasing said last named means to permit the spoke engaging means to engage the spoke.

4. The combination with the belt and the main pulley over which it passes, said main pulley having spokes, of an idler pulley over which said belt passes, a support for said idler pulley, means connected with said support and normally tending to engage with the spokes of said main pulley for shifting the position of the idler ulley, means for normally holding said spo e engaging means out of engagement with'the spoke, means controlled by the lateral movement of the belt for releasing said last named means to permit the spoke engaging means to engage the spoke, and another means for locking said spoke engaging means in one osition, and means also controlled b the ateral movement of the belt for re easing said locking means to permit the idler pulley to resume its normal position.

5. The combination with-the belt and the main pulley, having spokes, over which the belt passes, of a pivoted hanger, an idler pulley carried thereby over which the belt passes, an arm connected with said hanger and having a hook portion tending'to normally engage the spokes of said main pulley,

a guide bracket for said arm, means for normally holding said arm out-of engagement with the pulley s okes, belt controlled means for releasing sai( last named means to permit the arm to engage the pulley spokes at times.

6. The combination with the belt and the main pulley having spokes over which the belt passes, of a pivoted hanger, an idler pulley carried thereby over which the belt a main pulley having spokes over which the belt passes, of a pivoted hanger, an idler pulley carried thereby over which the belt passes, an arm connected with said hanger and having a hook portion, tending to normally engage the spokes of said main' pulley,

- a guide bracket for said arm, means for normally holding said arm out of engagement with the pulley 'spokes, belt controlled means for releasing said last named means to permit the arm to engage the pulley spokes at times, means carried by the arm for disengaging it from the spokes at times, andanother means for locking said arm after it is disengaged from the spokes.

8. The combination with the belt and the main pulley having spokes over which the belt passes, of a pivoted hanger, an idler pulleyv carried thereby over which the belt passes, an arm connected with said hanger and having a hook portion tending to normally engage the spokes of said main pulley,

a guide bracket for said arm, means for normally holding said arm out of engagement with the pulley s okes, belt controlled means for releasing sak last named means to permit the arm to engage the pulley spokes at times, means carried by the arm for disengaging it from the spokes at times, another means for locking said arm after it is disengaged from the. spokes, and belt controlled I means for releasirfg said locking means at other times to permit sald idler pulley and its hanger to assume its normal position.

EUGENE A. OSGOOD. Witnesses Oscar: SEMLEY,

J. H. CASH. 

